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Title: Automated quadrilateral surface discretization method and apparatus usable to generate mesh in a finite element analysis system

An automatic quadrilateral surface discretization method and apparatus is provided for automatically discretizing a geometric region without decomposing the region. The automated quadrilateral surface discretization method and apparatus automatically generates a mesh of all quadrilateral elements which is particularly useful in finite element analysis. The generated mesh of all quadrilateral elements is boundary sensitive, orientation insensitive and has few irregular nodes on the boundary. A permanent boundary of the geometric region is input and rows are iteratively layered toward the interior of the geometric region. Also, an exterior permanent boundary and an interior permanent boundary for a geometric region may be input and the rows are iteratively layered inward from the exterior boundary in a first counter clockwise direction while the rows are iteratively layered from the interior permanent boundary toward the exterior of the region in a second clockwise direction. As a result, a high quality mesh for an arbitrary geometry may be generated with a technique that is robust and fast for complex geometric regions and extreme mesh gradations.
Inventors:
 [1]
  1. (12205 Kashmir, N.E., Albuquerque, NM 87111)
Issue Date:
OSTI Identifier:
869324
Assignee:
Blacker, Teddy D. (12205 Kashmir, N.E., Albuquerque, NM 87111) SNL
Patent Number(s):
US 5315537
Contract Number:
AC04-76
Research Org:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
Country of Publication:
United States
Language:
English
Subject:
automated; quadrilateral; surface; discretization; method; apparatus; usable; generate; mesh; finite; element; analysis; automatic; provided; automatically; discretizing; geometric; region; decomposing; generates; elements; particularly; useful; generated; boundary; sensitive; orientation; insensitive; irregular; nodes; permanent; input; rows; iteratively; layered; interior; exterior; inward; counter; clockwise; direction; result; quality; arbitrary; geometry; technique; robust; fast; complex; regions; extreme; gradations; finite element; particularly useful; quadrilateral surface; surface discretization; apparatus automatically; lateral surface; element analysis; discretization method; complex geometric; /716/345/